Issue in couchbase version 4.5.0

I am using couchbase version 4.5.0 on windows server 2012r2. Sometimes couchbase server is not responding. when I check error in log file I found so many error. I can not get idea from log. can you suggest me why these errors come?
I have attached log files.

@vishal199028 Is this your Developer environment or a production server? We no longer support 4.5.0. Can you upgrade? I will go through the log files

Looks like it`s an answer :sweat_smile:

This is our production environment. If this error is specific to this version only then we will upgrade. Have you found any issue from log files?

@vishal199028 There are 2 issues I see with the partial information you have provided (Best thing to do is do cb_collect that will give complete picture). Indexer service seems to be not responding sometimes (don’t know the reason as I have incomplete information) I see crash of mochiweb_acceptor